Epsum factorial non deposit quid pro quo hic escorol. Olypian quarrels et gorilla congolium.
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The hair dye contacts the skin, and is heated during the hair dyeing process, so that the organic substances of benzene enter the capillaries through the scalp, and then reach the bone marrow with the blood circulation, and repeatedly act on the hematopoietic stem cells for a long time, leading to malignant transformation of hematopoietic stem cells, leading to leukemia. occur. One of the reasons why hair dyes cause skin irritation, leukemia and other diseases is because the hair dye contains a chemical called p-phenylenediamine.